mcnamara



.Feb.'20', .1923.

J-' J. w. McNAMARA.

SWAB.

FILED JUNE 26.1920.

2 SHEETS-SHEET l- INVENTOR ATTORNEY WITNESS:

JOHN w, IVIQNAMABA, earn U, INDIANA.

Application flatt ns 26; 1920. Serial No. 392,064.

To all whom it marl concern? Be it known that I, Jonn W. MONAMARA, acitizen of the United States, residing at Peru, in the county of Miamiand State of Indiana, haveinvented new and useful Improvements in Swabs,of which the following is a specification:

This invention relatesto means forlubrieating reciprocating rods such aspiston rods and valve stem rods, the principal object of the inventionbeing to provide'a'ringvlike container for the lubricant which surroundsthe rod and is provided with openings in its inner-peripheryforpermitting the lubricant to pass to the rod as the same'isreciprocated throughthe container. 7

The purpose of invention is to do away with the old styleswab and oilcups which are now used to lubricate the rods and packing.

This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts, to behereinafter fully described,

illustrated in the accompanying drawings and specifically pointed out inthe appended claims. I

In describing my invention in detail reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several 1 views, and in'which:

Figure 1 is a sectional view showing my invention applied to a pistonrod.

Figure 2 is an end view with parts broken away of a slightly differentform of the invention.

Figure 3 is a section on line 33 of Fig ure 2.

Figure t is an end view with parts broken away, of another form-of theinvention.

Figure 5 is asection on line 5-5 of Figure 4:. l

Fig. 6 is a sectional view of a modification. Fig. 7 is a perspectiveview of one half of the sleeve.

Referring to Figure 1 the rod to be lubri (rated is shown at 1 and 2indicates the ring like container for the lubricant which surrounds therod. This container is suitably secured 'to a stationary part, such asthe packing gland of a piston rod, so asto be immovable as the rodreciprocates through it. The inner periphery of the container snuglyfits the rod, though loose enough to prevent undue friction. The innerwall? i of" the container is provided with afnum: ber of inclined holes4 which connect the interior of the container with the inner space inwhich the rod is locatedso'that the lubricant may pass from the"contamer on to the rod. The container is p'r'ovided with a screw cap 5by which it may be replenished with lubricant. The screw threadedopening in this cap engages the, v screw threads formed on the outerendof the innerflwall 3 which is extended beyond 9 the outer wally-6 ofthe container and said cap'is formed with a thickened inner part whichfits between the inner'and outer walls and forms a tight joint betweenthec'ap and container.

It will thus be seen'thatas the rod is re ciprocated the lubricantwill'be'drawn from the container through the holes-AL and will spreadover the rod so as to thoroughly lu bricate the same and will be carriedb'y' the rod into-the packing-gland and keep the packing lubricated.

In the form shown in Figures 2 and 3, the outer wall 7 is formedseparate from the bottom 8 and the inner wall 9, this bot 1 tom andinner wall being formed integrally and the bottom being screw threadedto the outer wall 7. The part of the container consisting of the innerand bottom parts is divided into two parts so that these parts may beplaced on the rod without having to slip them over the endof the rod. Inthis case the large outer wall is placed over the piston rod and the twohalves forming the inner wall and the bottomflare'placed in positionsurrounding the piston and then.

the parts brought together and the bottom screwed to the'cuter wall,Then the cap" 10 is placed in position, this cap being similar to thatshown in the first form. This construction is detachable where thepiston rod has enlarged'parts which would prevent "the form shown inFigure 1 from passing over them. a c .1

In the form shown in Figures 4: and 5,the'

container including the inner and outer walls and the bottomis dividedinto two halves, each half having a pair of end walls 11, the end wallsof each pair abutting the 1 other end walls when the container isplacedaroundthe rod. The cap 12 in this form,

its outer edge to receive the edge of the outer wall of the container.The two parts of the cap are held together by means 01 the springsemi-circular member 14- which is provided with a groove 15 to receivethe outer periphery of the cap. This form of the device is moreparticularly adapted for air pump rods and rods where it is impossibleor undesirable to pass the container over an end of the rod.

It is thought from the foregoing description that the advantages andnovel "features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the constructionand in the combination and arrangement of the several parts, providedthat such changes tall within the scope of the appended claims.

' What I claim is 1. A lubricator for rechprocating rods comprising anattaching base presenting a bore for the said rod, a perforated sleevesurrounding the bore, flange encircling the sleeve and spaced therefromto provide an intervening space for hibricant, and. a clo sure capthreaded on the outer end of the said sleeve and movable thereon intocontact with the said flange to close the said space, said cap having athickened portion fitting between the sleeve and flange and providing atight joint.

2. A lubricator for reciprocating rods comprising a pair of complementalsections presenting perforated sleeve-sections between which the rod isaccommodated and a lubricant chamber surrounding the sleeve, the saidsleeve having its outer end threaded, and a cap adjustable on the saidsleeve for closing the said chamber, said cap having a threaded openingin which the threaded end of the sleeve is confined, whereby the saidcomplemental sections are vheld together.

3. A lubricator for reciprocating rods comprising a ring insertable overa rod and threaded at one end, a sectional closure rne1nher for thethreaded end of the ring, said member presenting attaching portions andintegral perforated sleeve sections engageable around the rod andthreaded shoulder sections having threaded engagement with the threadedend of? the said ring, said ring and sleeve sections being relativelyspaced to provide a space therebetween for lubricant said sleevesections presenting a threaded end beyond the said space, and a closurecap having threaded engagement with the threaded end of the sleevesections and being adjustable thereon for engaging the said ring toclose the said space, said ring and said cap serving to hold thesections of the said closure together.

In testimony whereof I atfix mv signature.

JOHN W. MONAMARA.

